Talk the talk, count the cards, do the math, end with sleight of hands. This is extremely amazing.

Right after the guy to his left said 21, Dani made a cut, so Dani knew exactly where the middle of the three cards he gave Alyson was, because he knew how many cards he gave to the two guys on his left and the other guy on his right. Dani made sure Alyson never shuffled her cards and only reversed the order when she put them one by one in the deck.